CN212230105U - Large-section high-temperature-resistant mobile flexible cable - Google Patents
Large-section high-temperature-resistant mobile flexible cable Download PDFInfo
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- CN212230105U CN212230105U CN202020545862.3U CN202020545862U CN212230105U CN 212230105 U CN212230105 U CN 212230105U CN 202020545862 U CN202020545862 U CN 202020545862U CN 212230105 U CN212230105 U CN 212230105U
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Abstract
The utility model discloses a high temperature resistant removal flexible cable of big cross-section, wrap up in proper order outside with interior cable core the outer basalt of cable core is around covering, interior mica tape insulating layer, basalt weaving layer, outer mica tape insulating layer and basalt sheath. The utility model discloses a cable cooling tube is big with the area of contact of conductor, cooling efficiency is high, basalt winds the covering, basalt weaving layer and basalt sheath three-layer basalt material, the high temperature resistance of cable has both been guaranteed, the cable line footpath has also been reduced, rely on conductor and basalt to guarantee cable relative slip when crooked around the low line footpath of low friction between the covering and cable, can remove and crooked after laying, inflammable material such as rubber in the cable, need not the sintering and can work under the 600 ℃ environment promptly, do not produce the pollution during the use, mechanical properties reduces fewly, long service life under the high temperature.
Description
Technical Field
The utility model relates to a cable especially relates to a high temperature resistant flexible cable that removes of big cross-section.
Background
The working environment of the cable is quite variable, and in actual field work, the cable arranged in a high temperature area, for example, the environment temperature reaches more than 250 ℃, is often encountered. Under the high-temperature working environment, the common cable cannot bear the working temperature and is damaged or the performance of the common cable is reduced, so that signal or power transmission faults are caused, the main body equipment is subjected to fault tripping, outage and even damage, and great hidden dangers exist for the safe use of the main body equipment. And the high-temperature area can not enter the high-temperature area in normal operation, so that great difficulty is brought to the maintenance work. The above situation brings great harm to the safety and economy of the power equipment.
At present, domestic high-temperature-resistant cables are mainly made of fluoroplastics, or polytetrafluoroethylene or other composite materials. The fluoroplastic insulation temperature-resistant grade is low, and the maximum allowable long-term working temperature is about 200 ℃. The polytetrafluoroethylene and the composite material mainly adopt a wrapping and sintering process, and the sintering process has the defects of high pollution and environmental pollution, can release toxic and harmful gas and is not good for the health of staff.
The other high-temperature-resistant cable adopts a metal sheath, is fixedly arranged, cannot be bent and is very inconvenient to use.
Therefore, it is necessary to develop a large-section high-temperature-resistant mobile flexible cable which allows the working temperature to be 600 ℃ for a long time, is pollution-free and environment-friendly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a long-term allowable operating temperature 600 ℃, pollution-free, environment-friendly's big cross-section high temperature resistant removal flexible cable.
Realize the utility model discloses the technical scheme of purpose is: a large-section high-temperature-resistant mobile flexible cable comprises a cable core, and a basalt lapping layer, an inner mica tape insulating layer, a basalt braiding layer, an outer mica tape insulating layer and a basalt sheath which are sequentially wrapped outside the cable core from inside to outside; the cable core comprises a central cooling pipe, and a first conductor layer, a cooling layer and a second conductor layer which are sequentially wound outside the central cooling pipe from inside to outside; the first conductor layer and the second conductor layer are both formed by conductors; the cooling layer is composed of conductors and cooling pipes which are arranged at intervals.
First conductor layer external diameter 9.0mm, cooling layer external diameter 15.0mm, second conductor layer external diameter 21.0 mm. The conductor cross-section is big, and transmission of electricity flow is big, and the cooling tube pipe diameter is big, can be through more coolant, and the cooling effect is good.
The conductors in the first conductor layer, the second conductor layer and the cooling layer are formed by twisting 52 nickel-plated copper wires, and the diameter of each nickel-plated copper wire is 0.390 mm.
The central cooling pipe and the cooling pipe are hollow red copper pipes which are filled with cooling media; the inner diameters of the central cooling pipe and the cooling pipe are 2.0mm, and the thickness of the pipe wall is 0.5 mm.
The inner mica tape insulating layer and the outer mica tape insulating layer are wound in multiple layers, and the winding direction is changed every two layers.
Preferably, the inner mica tape insulating layer and the outer mica tape insulating layer are respectively provided with four layers, two layers are wound in the left direction, and two layers are wound in the right direction.
The basalt lapping layer is made of basalt fiber fireproof cloth, the thickness of the basalt lapping layer is 0.2mm, the width of the basalt lapping layer is 25mm, the lapping rate is 15% -25%, and the thickness of the basalt lapping layer is 1 layer, and is 0.6 mm.
The basalt braided layer is braided by adopting 32-spindle high-temperature-resistant basalt fibers, each spindle is provided with 12 bundles of high-temperature-resistant basalt fibers, and the braiding density is more than or equal to 95%; the basalt braided layer meets the requirements that the tensile strength of fibers is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of yarns after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50%, and the braided thickness is 0.2 mm.
The basalt sheath is woven by 32-spindle high-temperature-resistant basalt fibers, each spindle is provided with 15 bundles of high-temperature-resistant basalt fibers, and the weaving density is more than or equal to 95%; the basalt sheath can meet the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50%, and the weaving thickness is 0.2 mm.
The utility model also provides a big cross-section high temperature resistant removal flexible cable preparation technology for produce foretell big cross-section high temperature resistant removal flexible cable, preparation technology includes following step:
s1: stranding the conductor;
s2: stranding the cable core: routing a conductor around the central cooling tube to make the first conductor layer; arranging conductors and cooling pipes outside the first conductor layer at intervals to form the cooling layer; arranging a conductor outside the cooling layer to form the second conductor layer; and regularly twisting the central cooling pipe, the first conductor layer, the cooling layer and the second conductor layer to form the cable core.
S3: the basalt lapping layer is wound outside the cable core;
s4: wrapping the inner mica tape insulating layer outside the basalt wrapping layer;
s5: weaving the basalt braided layer outside the inner mica tape insulating layer;
s6: wrapping the outer mica tape insulating layer outside the basalt braided layer;
s7: and weaving the basalt sheath outside the outer mica tape insulating layer.
In the step S1, 1560 nickel-plated copper wire bundles with the wire diameter of 0.39mm are stranded into 30 strands of conductors, each strand has 52 strands, and the strand pitch is 77-90 mm.
In step S2, arranging six conductors around the central cooling tube to form the first conductor layer; arranging six conductors and six cooling pipes outside the first conductor layer at intervals to form the cooling layer, wherein the stranding pitch is 155-194 mm; eighteen conductors are arranged outside the cooling layer to form the second conductor layer, and the stranding pitch is 226-291 mm; and regularly twisting the central cooling pipe, the first conductor layer, the cooling layer and the second conductor layer to form the cable core, wherein the twisting pitch of the outermost layer is 272-317 mm.
In the step S3, the basalt lapping layer is lapped by using basalt fiber fireproof cloth; the thickness of the basalt lapping layer is 0.2mm, the width of the basalt lapping layer is 25mm, the lapping rate is 15% -25%, the lapping rate is 1 layer, and the thickness of the basalt lapping layer is 0.6 mm.
In the step S4, the inner mica tape insulating layer is provided with four layers of lapping, two layers of lapping are first left-hand lapping, and two layers of lapping are then right-hand lapping.
In the step S5, the basalt braided layer is braided by adopting high-temperature-resistant basalt fibers, a 32-spindle braiding machine is adopted, 12 bundles of high-temperature-resistant basalt fibers are braided per spindle, the braiding angle is 35-45 degrees, and the braiding density is more than or equal to 85 percent; the basalt braided layer meets the requirements that the tensile strength of fibers is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of yarns after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50%, and the thickness of the basalt braided layer is 0.2 mm.
In the step S6, the outer mica tape insulating layer is provided with four layers, two layers are wound in the left direction first, and two layers are wound in the right direction later.
In the step S7, the basalt sheath is woven by adopting high-temperature-resistant woven basalt fibers, a 32-spindle weaving machine is adopted, 15 bundles of high-temperature-resistant basalt fibers are woven in each spindle, the weaving angle is 35-45 degrees, and the weaving density is not less than 85 percent; the basalt braided layer meets the requirements that the tensile strength of fibers is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of yarns after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50%, and the thickness of the basalt jacket is 0.2 mm.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses a cable is provided with central cooling tube and cooling tube in the cable core, and cooling tube and conductor interval arrangement and winding are between first conductor layer and second conductor layer, the area of contact of cooling tube and conductor is big, cooling efficiency is high, basalt is around the covering, basalt weaving layer and basalt sheath three-layer basalt material, the high temperature resistance ability of cable has both been guaranteed, the cable diameter has also been reduced, rely on conductor and basalt to guarantee cable bending relative slip when low friction between the covering and the low line footpath of cable, can remove and crooked after laying, inflammable material such as no rubber in the cable, need not the sintering and can work under the 600 ℃ environment, produce not the pollution during use, mechanical properties reduces fewly, long service life under the high temperature, the big conveying efficiency in cross-section.
(2) The utility model discloses a conductor adopts the transposition of nickel-plated copper wire to form, and nickel-plated copper wire heat resistance is good, still can keep good electric conduction and tensile properties under the high temperature, makes twisting of conductor after the transposition simultaneously, and crooked and tensile properties have obtained the improvement, have increased the bending property of cable under high temperature environment.
(3) The utility model discloses a central cooling tube and cooling tube are for leading to the cavity copper pipe that has coolant, and copper material heat conduction efficiency is high, and the heat dissipation is fast, leads to can derive the inside high temperature of cable fast behind the coolant, has increased the heat dispersion of cable under high temperature environment, has guaranteed the life under the cable high temperature.
(4) The utility model discloses an equal multilayer of interior mica tape insulating layer and outer mica tape insulating layer winds the package, and every winds two-layer change of package and winds the package direction, has increased the compactness of insulating properties and cable, and difficult pine takes off simultaneously, has further strengthened the bending property of cable.
(5) The utility model discloses a basalt adopts basalt fiber fire prevention cloth around the covering, and frictional force is low, can relative slip when guaranteeing the cable bending, can remove and crooked after laying, and basalt fiber fire prevention cloth's heat resistance is excellent, has increased the compactness of cable core, has strengthened the bending property of cable.
(6) The utility model discloses a basalt weaving layer adopts 32 spindle high temperature resistant basalt fiber to weave, and every spindle 12 bunches of high temperature resistant basalt fiber have further strengthened the compactness and the heat resistance of cable.
(7) The utility model discloses a basalt sheath adopts 32 spindle high temperature resistant basalt fiber to weave, and every spindle 15 is restrainted high temperature resistant basalt fiber, and high temperature resistance can be good, and antifriction performance is better, has further strengthened the life of cable under high temperature performance.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural view of the large-section high-temperature resistant mobile flexible cable of the present invention.
The reference numbers in the drawings are as follows:
the cable comprises a cable core 1, a central cooling pipe 1-1, a conductor 1-2, a cooling pipe 1-3, a basalt lapping layer 2, an inner mica tape insulating layer 3, a basalt weaving layer 4, an outer mica tape insulating layer 5 and a basalt sheath 6.
Detailed Description
(example 1)
Referring to fig. 1, the large-section high-temperature-resistant mobile flexible cable of the embodiment includes a cable core 1, and a basalt lapping layer 2, an inner mica tape insulating layer 3, a basalt braiding layer 4, an outer mica tape insulating layer 5 and a basalt sheath 6 which are sequentially wrapped outside the cable core 1 from inside to outside. The cable core 1 comprises a central cooling pipe 1-1, and a first conductor layer, a cooling layer and a second conductor layer which are sequentially wound outside the central cooling pipe 1-1 from inside to outside. The first conductor layer and the second conductor layer are each constituted by conductors 1-2. The cooling layer is composed of conductors 1-2 and cooling pipes 1-3 which are arranged at intervals.
The external diameter of the first conductor layer is 9.0mm, the external diameter of the cooling layer is 15.0mm, and the external diameter of the second conductor layer is 21.0 mm. The section of the conductor 1-2 is large, the transmission flow is large, the diameter of the cooling pipe 1-3 is large, more cooling media can pass through, and the cooling effect is good
The number of the conductors 1-2 in the first conductor layer, the second conductor layer and the cooling layer is 30, the conductors are stranded by 1560 nickel-plated copper strands, each strand is 52, the diameter of each strand is 0.390mm, the strand pitch is 77-90 mm, the number of the conductors in the first conductor layer and the number of the conductors in the cooling layer are 6, and the number of the conductors in the second conductor layer is 18. The diameter of the stranded wire is proper, so that the conductor 1-2 can be fully contacted with the cooling pipe 1-3, and the cooling effect is improved.
In order to increase the cooling efficiency, the central cooling pipe 1-1 and the cooling pipe 1-3 are hollow red copper pipes which are filled with cooling media. The inner diameters of the central cooling pipe 1-1 and the cooling pipe 1-3 are 2.0mm, the pipe wall thickness is 0.5mm, the heat conduction efficiency of the copper pipe is high, the introduced cooling medium comprises liquid nitrogen and air, the heat dissipation rate of the cable is greatly enhanced, the high temperature resistance and the current-carrying capacity of the cable are increased, and the use section of the cable is reduced.
In order to increase the tightness of the cable, the inner mica tape insulating layer 3 is provided with four layers, two layers are wound in the left direction firstly, two layers are wound in the right direction afterwards, and the two layers are wound in the reverse direction, so that the looseness is not easy to occur, the insulating property is enhanced, the cable is more compact, and the looseness is not easy to occur during bending.
In order to enhance the heat resistance of the cable, the basalt lapping layer 2 is made of basalt fiber fireproof cloth, the thickness of the basalt lapping layer 2 is 0.2mm, the width of the basalt lapping layer is 25mm, the lapping rate is 15% -25%, and the lapping layer 1 is wrapped.
The basalt braided layer 4 is braided by adopting 32-spindle high-temperature-resistant basalt fibers, each spindle is provided with 12 bundles of high-temperature-resistant basalt fibers, and the braiding density is more than or equal to 95%. The basalt braided layer 4 meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50 percent, and the thickness of the basalt braided layer 4 is 0.2 mm.
In order to further enhance the heat resistance of the cable, the basalt sheath 6 is woven by 32 ingots of high-temperature-resistant basalt fibers, and 15 bundles of high-temperature-resistant basalt fibers are woven in each ingot, wherein the weaving density is more than or equal to 95%. The basalt sheath 6 meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, the strength retention rate is more than or equal to 50%, and the thickness of the basalt sheath 6 is 0.2 mm.
The large-section high-temperature-resistant mobile flexible cable adopts the large-section conductor and the thin sheath, so that the heat resistance and the bending property are ensured, the power transmission performance of the cable is further improved, the outer diameter is reduced, and the cable is convenient to lay.
The preparation process of the large-section high-temperature-resistant mobile flexible cable comprises the following steps:
s1: the stranded conductor 1-2. 1560 nickel-plated copper wire bundles with the wire diameter of 0.39mm are stranded into 30 strands of conductors 1-2, each strand is 52, and the strand pitch is 77-90 mm.
S2: stranding a cable core 1: the first conductor layer is made by arranging conductors 1-2 around a central cooling tube 1-1. And arranging conductors 1-2 and cooling pipes 1-3 outside the first conductor layer at intervals to form a cooling layer. And arranging conductors 1-2 outside the cooling layer to form a second conductor layer. The central cooling tube 1-1, the first conductor layer, the cooling layer and the second conductor layer are normally stranded to make a cable core 1.
The method specifically comprises the following steps: six conductors 1-2 are arranged around the central cooling tube 1-1 to make a first conductor layer. And six conductors 1-2 and six cooling pipes 1-3 are arranged outside the first conductor layer at intervals to form a cooling layer. And eighteen conductors 1-2 are arranged outside the cooling layer to form a second conductor layer. The central cooling tube 1-1, the first conductor layer, the cooling layer and the second conductor layer are normally stranded to make a cable core 1.
S3: and a basalt lapping layer 2 is wound outside the cable core 1. And a basalt lapping layer 2 is lapped by using basalt fiber fireproof cloth. The thickness of the basalt lapping layer 2 is 0.2mm, the width is 25mm, the lapping rate is 15% -25%, and the lapping layer 1 is covered.
S4: an inner mica tape insulating layer 3 is lapped outside the basalt lapping layer 2. The inner mica tape insulating layer 3 is provided with four layers of wrapping, wherein the two layers of wrapping are firstly carried out in the left direction and then carried out in the right direction.
S5: and a basalt braided layer 4 is braided outside the inner mica tape insulating layer 3. The thickness of the basalt braided layer 4 is 0.2 mm. The basalt braided layer 4 is formed by braiding high-temperature-resistant braided basalt fibers, a 32-spindle braiding machine is adopted, 12 bundles of high-temperature-resistant basalt fibers are braided in each spindle, the braiding angle is 35-45 degrees, and the braiding density is larger than or equal to 85 percent. The basalt braided layer 4 meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, and the strength retention rate is more than or equal to 50%.
S6: and an outer mica tape insulating layer 5 is wrapped outside the basalt braided layer 4. The outer mica tape insulating layer 5 is provided with four layers, namely, two layers are wound in the left direction and two layers are wound in the right direction.
S7: and a basalt sheath 6 is woven outside the outer mica tape insulating layer 5. The thickness of the basalt sheath 6 is 0.2 mm. The basalt sheath 6 is formed by weaving high-temperature-resistant basalt fibers, a 32-spindle weaving machine is adopted, 15 bundles of high-temperature-resistant basalt fibers are woven in each spindle, the weaving angle is 35-45 degrees, and the weaving density is not less than 85 percent. The basalt braided layer 4 meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, and the strength retention rate is more than or equal to 50%.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a high temperature resistant flexible cable that removes of big cross-section which characterized in that: the cable comprises a cable core (1), and a basalt lapping layer (2), an inner mica tape insulating layer (3), a basalt braiding layer (4), an outer mica tape insulating layer (5) and a basalt sheath (6) which are sequentially wrapped outside the cable core (1) from inside to outside; the cable core (1) comprises a central cooling pipe (1-1), and a first conductor layer, a cooling layer and a second conductor layer which are sequentially wound outside the central cooling pipe (1-1) from inside to outside; the first conductor layer and the second conductor layer are both made of conductors (1-2); the cooling layer is composed of conductors (1-2) and cooling pipes (1-3) which are arranged at intervals.
2. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the conductor (1-2) in the cable core (1) is formed by twisting 52 nickel-plated copper strands with the wire diameter of 0.390 mm.
3. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the central cooling pipe (1-1) and the cooling pipe (1-3) are hollow red copper pipes which are filled with cooling media; the inner diameters of the central cooling pipe (1-1) and the cooling pipe (1-3) are 2.0mm, and the pipe wall thickness is 0.5 mm.
4. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the inner mica tape insulating layer (3) and the outer mica tape insulating layer (5) are wound in multiple layers, and the winding direction is changed every two layers.
5. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the basalt lapping layer (2) adopts basalt fiber fireproof cloth; the basalt lapping layer (2) is 0.2mm in thickness, 25mm in width, 15% -25% in lapping rate and 1 layer in lapping.
6. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the basalt braided layer (4) is braided by adopting 32-spindle high-temperature-resistant basalt fibers, each spindle is provided with 12 bundles of high-temperature-resistant basalt fibers, and the braiding density is more than or equal to 95%; the basalt braided layer (4) meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, and the strength retention rate is more than or equal to 50 percent; the thickness of the basalt braided layer (4) is 0.2 mm.
7. A large-section high-temperature-resistant mobile flexible cable according to claim 1, characterized in that: the basalt sheath (6) is woven by 32-spindle high-temperature-resistant basalt fibers, each spindle is provided with 15 bundles of high-temperature-resistant basalt fibers, and the weaving density is more than or equal to 95%; the basalt sheath (6) meets the requirements that the tensile strength of the fiber is more than or equal to 2600MPa at normal temperature, the tensile breaking strength of the yarn after heat treatment is more than or equal to 0.20N/tex, and the strength retention rate is more than or equal to 50%; the thickness of the basalt sheath (6) is 0.2 mm.
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| CN202020545862.3U CN212230105U (en) | 2020-04-14 | 2020-04-14 | Large-section high-temperature-resistant mobile flexible cable |
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| CN202020545862.3U CN212230105U (en) | 2020-04-14 | 2020-04-14 | Large-section high-temperature-resistant mobile flexible cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540538A (en) * | 2020-04-14 | 2020-08-14 | 远东电缆有限公司 | Large-section high-temperature-resistant mobile flexible cable for high-temperature equipment and preparation process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540538A (en) * | 2020-04-14 | 2020-08-14 | 远东电缆有限公司 | Large-section high-temperature-resistant mobile flexible cable for high-temperature equipment and preparation process thereof |
| CN111540538B (en) * | 2020-04-14 | 2022-01-14 | 远东电缆有限公司 | Large-section high-temperature-resistant mobile flexible cable for high-temperature equipment and preparation process thereof |
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